:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --border: #e3e7ee;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #1a5fd0;
  --primary-dark: #163f8f;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --sidebar: #12295e;
  --sidebar-text: #c7d2e8;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--primary); text-decoration: none; }
h1, h2, h3 { margin: 0; }

/* Layout */
.app { display: flex; min-height: 100vh; align-items: flex-start; }
.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--sidebar);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.brand { text-align: center; padding: 2px 6px 18px; }
.brand-logo { width: 110px; height: 110px; border-radius: 50%; background: #fff; object-fit: cover; box-shadow: 0 2px 10px rgba(0,0,0,.3); display: block; margin: 0 auto 8px; }
.brand-name { font-size: 24px; font-weight: 800; color: #fff; letter-spacing: .3px; line-height: 1.1; }
.brand-name span { color: #6fa8ff; }
.brand-tagline { font-size: 11px; color: var(--sidebar-text); text-transform: uppercase; letter-spacing: .04em; margin-top: 4px; }
.nav { display: flex; flex-direction: column; gap: 4px; }
.nav-btn {
  background: none; border: none; color: var(--sidebar-text);
  text-align: left; padding: 10px 12px; border-radius: 8px;
  font-size: 15px; cursor: pointer; display: flex; align-items: center; gap: 8px;
}
.nav-btn:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-btn.active { background: var(--primary); color: #fff; }
.badge {
  margin-left: auto; background: var(--danger); color: #fff;
  font-size: 12px; font-weight: 600; padding: 1px 7px; border-radius: 99px;
}
.sidebar-footer { margin-top: auto; display: flex; flex-direction: column; gap: 6px; }
.sidebar-footer .btn { background: rgba(255,255,255,.08); color: var(--sidebar-text); border: none; }
.sidebar-footer .btn:hover { background: rgba(255,255,255,.15); color: #fff; }
.sidebar-sep { border: none; border-top: 1px solid rgba(255,255,255,.12); margin: 6px 0; }
.sync-status { font-size: 12px; color: var(--sidebar-text); padding: 4px 6px 8px; line-height: 1.4; word-break: break-word; }
.sync-status.error { color: #fca5a5; }
.sync-status.ok { color: #86efac; }
.sync-status.pending, .sync-status.saving, .sync-status.loading { color: #fde68a; }
.sync-status.backup { padding-top: 0; }
.sync-test { font-size: 13px; margin: -6px 0 12px; min-height: 18px; }
.sync-test.ok { color: var(--success); }
.sync-test.error { color: var(--danger); }

.content { flex: 1; padding: 28px 32px; max-width: 1200px; }

.page-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.page-header h1 { font-size: 24px; }
.page-header .actions { display: flex; gap: 8px; flex-wrap: wrap; }
.breadcrumb { color: var(--muted); font-size: 14px; margin-bottom: 6px; }
.breadcrumb a { color: var(--primary); cursor: pointer; }

/* Cards */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 20px; margin-bottom: 20px;
}
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 10px; flex-wrap: wrap; }
.card-header h2 { font-size: 17px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px 18px; box-shadow: var(--shadow); cursor: pointer; }
.stat:hover { border-color: var(--primary); }
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 28px; font-weight: 700; margin-top: 2px; }
.stat.warn .value { color: var(--warning); }

.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px 20px; }
.info-grid .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.info-grid .val { font-weight: 500; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-size: 14px; cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: #f1f5f9; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { filter: brightness(.92); }
.btn-danger { color: var(--danger); }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 5px 10px; font-size: 13px; }
.btn-link { border: none; background: none; color: var(--primary); padding: 4px 6px; cursor: pointer; font-size: 14px; }
.btn-link:hover { text-decoration: underline; }
.btn-link.danger { color: var(--danger); }
.icon-btn { background: none; border: none; font-size: 22px; cursor: pointer; color: var(--muted); line-height: 1; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; background: #f8fafc; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f8fafc; }
td .actions { display: flex; gap: 2px; flex-wrap: wrap; }
.row-link { color: var(--primary); cursor: pointer; font-weight: 500; }
.row-link:hover { text-decoration: underline; }
.empty { color: var(--muted); text-align: center; padding: 28px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.pre { white-space: pre-wrap; }

/* Status */
.status { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.status-scheduled { background: #dbeafe; color: #1e40af; }
.status-done { background: #dcfce7; color: #166534; }
.status-cancelled { background: #f3f4f6; color: #6b7280; }
.today-tag { background: #fef3c7; color: #92400e; padding: 1px 7px; border-radius: 99px; font-size: 11px; font-weight: 600; margin-left: 6px; }
.overdue-tag { background: #fee2e2; color: #991b1b; padding: 1px 7px; border-radius: 99px; font-size: 11px; font-weight: 600; margin-left: 6px; }

/* Toolbar / filters */
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.toolbar input[type="search"], .toolbar input[type="date"] {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; min-width: 240px;
}
.tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.tab { padding: 6px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); cursor: pointer; font-size: 13px; }
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* Forms */
label { display: block; font-size: 13px; font-weight: 500; color: var(--muted); margin-bottom: 12px; }
input, select, textarea {
  display: block; width: 100%; margin-top: 4px;
  padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; color: var(--text); background: #fff;
}
input:focus, select:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: var(--primary); }
textarea { min-height: 70px; resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.form-hint { color: var(--muted); font-size: 12px; margin: -8px 0 12px; }

/* Dịch vụ */
th.num, td.num { text-align: right; white-space: nowrap; }
.svc-label { font-size: 13px; font-weight: 500; color: var(--muted); margin-bottom: 4px; }
.svc-list { border: 1px solid var(--border); border-radius: 8px; max-height: 200px; overflow: auto; margin-bottom: 8px; }
.svc-item { display: flex; align-items: center; gap: 10px; padding: 8px 10px; margin: 0; border-bottom: 1px solid var(--border); cursor: pointer; color: var(--text); font-weight: 400; font-size: 14px; }
.svc-item:last-child { border-bottom: none; }
.svc-item:hover { background: #f8fafc; }
.svc-item input { width: auto; margin: 0; }
.svc-name { flex: 1; }
.svc-price { color: var(--muted); white-space: nowrap; }
.svc-total { text-align: right; margin-bottom: 14px; font-size: 14px; }
.svc-total strong { color: var(--primary); font-size: 16px; }

.picker-search { margin-bottom: 6px; }
.svc-more { padding: 8px 10px; }
.picker { position: relative; }
.picker-results {
  position: absolute; left: 0; right: 0; top: 100%; z-index: 5;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0,0,0,.12); max-height: 260px; overflow: auto;
}
.picker-item { display: flex; gap: 10px; align-items: center; padding: 8px 10px; cursor: pointer; font-weight: 400; color: var(--text); border-bottom: 1px solid var(--border); font-size: 14px; }
.picker-item:last-child { border-bottom: none; }
.picker-item:hover { background: #eff6ff; }
.picker-more { padding: 8px 10px; }

/* Nhập viện */
.status-active { background: #fee2e2; color: #991b1b; }
.status-normal { background: #f1f5f9; color: #475569; font-weight: 500; }
.page-header h1 .status { vertical-align: middle; font-size: 13px; margin-left: 6px; }
.adm { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; margin-bottom: 12px; }
.adm-active { border-color: #fca5a5; background: #fffafa; }
.adm-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.adm-head .status { margin-right: 6px; }
.adm-total { white-space: nowrap; font-size: 14px; color: var(--muted); }
.adm-total strong { color: var(--primary); font-size: 17px; }
.adm-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.adm-summary { background: #f8fafc; border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 14px; }
.adm-summary table { margin-top: 4px; }
.adm-summary td { padding: 4px 6px; border-bottom: 1px solid var(--border); }
.check-row { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 500; cursor: pointer; padding: 8px 10px; background: #fff7ed; border: 1px solid #fed7aa; border-radius: 8px; }
.check-row input { width: auto; margin: 0; }

/* Đơn thuốc */
.med-row { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; margin-bottom: 8px; background: #fafbfd; }
.med-row-top { display: flex; gap: 6px; align-items: center; }
.med-row-top .mr-name { margin: 0; font-weight: 600; }
.med-row-top .icon-btn { font-size: 20px; padding: 0 4px; }
.med-row-grid { display: grid; grid-template-columns: 1fr 1fr 1.3fr 1.2fr; gap: 6px; align-items: center; margin-top: 6px; }
.med-row-grid input { margin: 0; }
.mr-total { text-align: right; font-weight: 600; color: var(--primary); font-size: 14px; }
.med-row .mr-dosage { margin-top: 6px; font-size: 13px; }
.med-tools { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin: 4px 0 14px; flex-wrap: wrap; }
.med-line { margin-bottom: 4px; }
.med-line:last-child { margin-bottom: 0; }
@media (max-width: 800px) { .med-row-grid { grid-template-columns: 1fr 1fr; } }

.grand-total { text-align: right; margin: -4px 0 14px; padding-top: 8px; border-top: 1px dashed var(--border); font-size: 14px; }
.grand-total strong { color: var(--primary); font-size: 17px; }

/* Doanh thu */
.rev-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 20px; align-items: start; }
.rev-grid .card { margin-bottom: 20px; }
.rev-main { color: var(--primary); }
label.inline { display: inline-flex; align-items: center; gap: 6px; margin: 0; }
label.inline input { width: auto; margin: 0; }
@media (max-width: 900px) { .rev-grid { grid-template-columns: 1fr; } }

.acct-line { font-size: 14px; font-weight: 500; }
.acct-line.ok { color: var(--success); }
.acct-line.error { color: var(--danger); }
.acct-line.pending, .acct-line.saving, .acct-line.loading { color: var(--warning); }

/* Tình trạng hệ thống (thu gọn) */
details.sys-card { padding: 0; }
details.sys-card summary { list-style: none; cursor: pointer; padding: 14px 20px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
details.sys-card summary::-webkit-details-marker { display: none; }
details.sys-card summary::before { content: '▸'; color: var(--muted); font-size: 13px; }
details.sys-card[open] summary::before { content: '▾'; }
.sys-title { font-weight: 600; }
.sys-summary { font-size: 13px; color: var(--muted); }
.sys-summary .ok { color: var(--success); } .sys-summary .error { color: var(--danger); } .sys-summary .pending, .sys-summary .saving, .sys-summary .loading { color: var(--warning); }
.sys-hint { margin-left: auto; }
details.sys-card[open] .sys-hint { display: none; }
.sys-body { padding: 4px 20px 16px; border-top: 1px solid var(--border); }
.sys-row { display: grid; grid-template-columns: 180px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.sys-row:last-child { border-bottom: none; }
.sys-label { font-weight: 600; font-size: 14px; }
@media (max-width: 800px) { .sys-row { grid-template-columns: 1fr; gap: 4px; } }

/* Menu Hành động */
.menu { position: relative; display: inline-block; }
.menu-list {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 20; min-width: 240px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,.14); padding: 6px; text-align: left;
}
.menu-item { display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; text-align: left; background: none; border: none; padding: 9px 12px; border-radius: 7px; font-size: 14px; color: var(--text); cursor: pointer; }
.menu-item:hover { background: #eff6ff; }
.menu-item.danger { color: var(--danger); }
.menu-item.danger:hover { background: #fef2f2; }
.menu-item:disabled { color: var(--muted); cursor: not-allowed; background: none; }
.menu-hint { font-size: 12px; color: var(--muted); font-weight: 400; }
.menu-sep { border-top: 1px solid var(--border); margin: 6px 4px; }

/* Xóa mềm */
.status-deleted { background: #f3f4f6; color: #6b7280; }
.banner-deleted { background: #fff7ed; border-color: #fed7aa; color: #9a3412; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.deleted-hint { background: #fffbeb; border: 1px solid #fde68a; border-radius: 8px; padding: 8px 12px; margin-bottom: 10px; color: #92400e; }
.deleted-hint .btn-link { padding: 0; font-size: 13px; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .5);
  display: flex; align-items: center; justify-content: center; z-index: 100; padding: 16px;
}
.modal {
  background: var(--surface); border-radius: 14px; width: 100%; max-width: 560px;
  max-height: 92vh; overflow: auto; box-shadow: 0 20px 50px rgba(0,0,0,.3);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 17px; }
.modal-body { padding: 18px 20px 6px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; padding: 6px 0 14px; }

/* Đăng nhập */
body.locked .app { display: none; }
#login-screen {
  position: fixed; inset: 0; z-index: 50; padding: 16px;
  background: linear-gradient(135deg, #12295e 0%, #1a5fd0 100%);
  display: flex; align-items: center; justify-content: center;
}
.login-card {
  background: var(--surface); border-radius: 16px; padding: 30px 28px 22px;
  width: 100%; max-width: 380px; text-align: center; box-shadow: 0 20px 50px rgba(0,0,0,.35);
}
.login-logo { width: 120px; height: 120px; border-radius: 50%; object-fit: cover; box-shadow: 0 2px 10px rgba(0,0,0,.15); }
.login-card h1 { font-size: 28px; font-weight: 800; color: var(--sidebar); margin: 10px 0 0; }
.login-card h1 span { color: var(--primary); }
.login-sub { color: var(--muted); margin: 2px 0 18px; }
.login-card label { text-align: left; }
.btn-block { width: 100%; justify-content: center; padding: 11px; font-size: 15px; }
.login-error { color: var(--danger); font-size: 13px; min-height: 18px; margin: -4px 0 10px; text-align: left; }
.login-links { margin-top: 14px; }
.login-links .btn-link { font-size: 13px; color: var(--muted); }

/* Ô người dùng */
.user-box { background: rgba(255,255,255,.07); border-radius: 8px; padding: 8px 10px; margin-bottom: 6px; font-size: 13px; }
.user-box .u-name { color: #fff; font-weight: 600; }
.user-box .u-role { color: var(--sidebar-text); font-size: 12px; }
.user-box .u-actions { display: flex; gap: 10px; margin-top: 5px; }
.user-box .btn-link { color: #9cc3ff; padding: 0; font-size: 12px; }
.role-tag { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; background: #e0e7ff; color: #3730a3; }
.role-tag.staff { background: #f1f5f9; color: #475569; }

/* Toast */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: #111827; color: #fff; padding: 10px 18px; border-radius: 8px;
  font-size: 14px; opacity: 0; pointer-events: none; transition: all .25s; z-index: 200;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Reminder list */
.reminder { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.reminder:last-child { border-bottom: none; }
.reminder .time { font-weight: 700; min-width: 120px; }
.reminder .who { flex: 1; min-width: 180px; }
.reminder .who .sub { color: var(--muted); font-size: 13px; }

/* Responsive */
@media (max-width: 800px) {
  .app { flex-direction: column; align-items: stretch; overflow-x: hidden; }
  .sidebar { width: 100%; height: auto; position: static; overflow: visible; padding: 12px 14px; }
  .brand { display: flex; align-items: center; gap: 10px; text-align: left; padding-bottom: 10px; }
  .brand-logo { width: 44px; height: 44px; margin: 0; }
  .brand-name { font-size: 18px; }
  .brand-tagline { display: none; }
  .nav { flex-direction: row; overflow-x: auto; }
  .nav-btn { white-space: nowrap; }
  .sidebar-footer { flex-direction: row; flex-wrap: wrap; margin-top: 10px; gap: 6px; }
  .sidebar-footer .btn { flex: 1 1 45%; justify-content: center; white-space: normal; min-width: 0; }
  .sidebar, .content { min-width: 0; max-width: 100%; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sync-status { flex: 1 1 100%; padding: 0 2px 2px; }
  .user-box { flex: 1 1 100%; }
  .sidebar-sep { display: none; }
  .content { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .toolbar input[type="search"] { min-width: 0; width: 100%; }
}